荷斯坦青年牛初次配种妊娠月龄对头胎和二胎产奶量和繁殖性能的影响

doi:10.11843/j.issn.0366-6964.2020.04.009

摘要/Abstract

摘要： 旨在研究母牛初次配种妊娠月龄（age at first pregnancy，AFP）对其泌乳性能和主要繁殖性能的影响。本研究以我国北方地区2个规模化奶牛场13 927头荷斯坦母牛（A牧场8 091头，B牧场5 836头）的生产数据为基础，统计了母牛AFP、头胎和二胎的产奶量、产后首次发情时间、首次配种时间和首次受孕时间，然后将母牛根据AFP的早晚（12~19月龄）分为8组，对各试验组母牛的头胎和二胎产奶量和主要繁殖性能的数据进行比较分析。结果表明：1）2个规模化奶牛场荷斯坦青年牛AFP以13和14月龄为主（总占比70.1%）；2）AFP可显著影响荷斯坦青年牛头胎和二胎的305 d产奶量（P<0.05），其中AFP为14月龄时A牧场头胎和二胎305 d产奶量均最高，分别为15 102和15 534 kg；3）AFP可显著影响荷斯坦青年牛头胎和二胎产后首次发情时间和受孕时间（P<0.05），AFP为14月龄时头胎产后首次发情和受孕情况最优；4）对于产后首配时间，除A牧场头胎AFP为16月龄时产后首次配种时间显著高于AFP为17月龄时（P<0.05）外，其余各组间均无显著性差异（P ≥ 0.05），并且各组间配种时间相差≤ 5 d；5）通过对A牧场在场牛（2 703头）与淘汰牛（660头）的AFP记录数据分析发现，在场牛的AFP为14.52月龄，显著高于淘汰牛的AFP（P<0.05）。因此，在北方地区现有的生产管理水平下，14月龄可能是荷斯坦青年牛最适宜的初次配种妊娠月龄，这对我国规模化奶牛场选择荷斯坦青年牛适宜的初次配种月龄具有一定参考价值。

关键词: 荷斯坦青年牛, 初次配种妊娠月龄, 产奶量, 繁殖性能

Abstract: This study aimed to analyze the effects of age at first pregnancy (AFP) on milk yield and reproductive performance of cows. In this study, production data of 13 927 Holstein dairy cows from two large-scale dairy cow herds (A herd 8 091,B herd 5 836) in northern China were collected. The age at first pregnancy (AFP), milk production, post-partum first estrus time during the first 2 lactations, first 2 mating time and first conception time during the first 2 lactations were detected. The cows were divided into 8 groups according to the AFP(12-19-month-old).The milk yield and main reproductive performance during the first 2 lactation of cows in different groups were compared and analyzed. The results showed that:1) The AFP of Holstein heifers in two large-scale farms were mainly in 13- and 14-month-old (accounting for 70.1% of the total); 2) AFP could significantly affect the 305 d milk production of Holstein dairy cows in the first 2 lactations (P<0.05), the highest 305 d milk production for the first 2 lactation (15 102 kg vs 15 534 kg) was obtained on 14-month-old for AFP in A herd; 3) AFP could significantly affect the post-partum first estrus time and first conception time of Holstein dairy cows in the first 2 lactation (P<0.05), the optimal post-partum first estrus time and first conception time for the first lactation was obtained on 14-month-old for AFP; 4)The post-partum first mating time of cows with AFP at 16-month-old in A farm was significantly higher than that of cows with AFP at 17-month-old for the first lactation (P<0.05), there was no significant difference among the other groups (P ≥ 0.05), and the difference in mating time among the groups was less than 5 days; 5) Based on the analysis of the AFP records of the cattle in the farm (2 703 heads) and the culling cattle (660 heads) in A farm, it was found that the AFP of the cattle in the farm was 14.52-month-old, which is significantly higher than the AFP of the culling cattle (P<0.05). In the northern region, under the current production management level, 14-month-old may be the most suitable age at first pregnancy for Holstein heifers, which has certain reference value for the age at first pregnancy for Holstein heifers in large-scale dairy farms in China.

Key words: Holstein heifers, age at first pregnancy, milk production, reproductive performance

中图分类号:

S823.9⁺1.2

赵善江, 帅志强, 庞云渭, 郝海生, 邹惠影, 杜卫华, 赵学明, 朱化彬. 荷斯坦青年牛初次配种妊娠月龄对头胎和二胎产奶量和繁殖性能的影响[J]. 畜牧兽医学报, 2020, 51(4): 732-742.

ZHAO Shanjiang, SHUAI Zhiqiang, PANG Yunwei, HAO Haisheng, ZOU Huiying, DU Weihua, ZHAO Xueming, ZHU Huabin. Effect of Age at First Pregnancy on Milk Production and Reproductive Performance During the First 2 Lactations in Holstein Dairy Cattle[J]. Acta Veterinaria et Zootechnica Sinica, 2020, 51(4): 732-742.

参考文献 36

[1]	BOULTON A C,RUSHTON J,WATHES D C.An empirical analysis of the cost of rearing dairy heifers from birth to first calving and the time taken to repay these costs[J].Animal,2017,11(8):1372-1380.
[2]	LOWE J K II,BOYER C N,GRIFFITH A P,et al.The cost of feeding bred dairy heifers on native warm-season grasses and harvested feedstuffs[J].J Dairy Sci,2016,99(1):634-643.
[3]	中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.GB/T 3157-2008中国荷斯坦牛[S].北京:中国标准出版社,2008.General Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China,China National Standardization Management Committee.GB/T 3157-2008 Chinese Holstein[S].Beijing:China Standard Press,2008.(in Chinese)
[4]	SILVA L F P,VANDEHAAR M J,WHITLOCK B K,et al.Short communication:relationship between body growth and mammary development in dairy heifers[J].J Dairy Sci,2002,85(10):2600-2602.
[5]	VAN AMBURGH M E,SOBERON F,MEYER M J,et al.Symposium review:integration of postweaning nutrient requirements and supply with composition of growth and mammary development in modern dairy heifers[J].J Dairy Sci,2019,102(4):3692-3705.
[6]	KAMAL M M,VAN EETVELDE M,DEPREESTER E,et al.Age at calving in heifers and level of milk production during gestation in cows are associated with the birth size of Holstein calves[J].J Dairy Sci,2014,97(9):5448-5458.
[7]	EASTHAM N T,COATES A,CRIPPS P,et al.Associations between age at first calving and subsequent lactation performance in UK Holstein and Holstein-Friesian dairy cows[J].PLoS One,2018,13(6):e0197764.
[8]	TORSHIZI M E.Effects of season and age at first calving on genetic and phenotypic characteristics of lactation curve parameters in Holstein cows[J].J Anim Sci Technol,2016,58:8.
[9]	KRPÁLKOVÁ L,CABRERA V E,VACEK M,et al.Effect of prepubertal and postpubertal growth and age at first calving on production and reproduction traits during the first 3 lactations in Holstein dairy cattle[J].J Dairy Sci,2014,97(5):3017-3027.
[10]	STEVENSON J L,RODRIGUES J A,BRAGA F A,et al.Effect of breeding protocols and reproductive tract score on reproductive performance of dairy heifers and economic outcome of breeding programs[J].J Dairy Sci,2008,91(9):3424-3438.
[11]	HUTCHISON J L,VANRADEN P M,NULL D J,et al.Genomic evaluation of age at first calving[J].J Dairy Sci,2017,100(8):6853-6861.
[12]	GILBERT R O.Symposium review:mechanisms of disruption of fertility by infectious diseases of the reproductive tract[J].J Dairy Sci,2019,102(4):3754-3765.
[13]	CRAIG H J B,STACHOWICZ K,BLACK M,et al.Genotype by environment interactions in fertility traits in New Zealand dairy cows[J].J Dairy Sci,2018,101(12):10991-11003.
[14]	PINEDO P J,DE VRIES A.Season of conception is associated with future survival,fertility,and milk yield of Holstein cows[J].J Dairy Sci,2017,100(8):6631-6639.
[15]	GERNAND E,KÖENIG S,KIPP C.Influence of on-farm measurements for heat stress indicators on dairy cow productivity, female fertility,and health[J].J Dairy Sci,2019,102(7):6660-6671.
[16]	LIU A,SU G,HÖGLUND J,et al.Genotype by environment interaction for female fertility traits under conventional and organic production systems in Danish Holsteins[J].J Dairy Sci,2019,102(9):8134-8147.
[17]	CHATERS G,RUSHTON J,DULU T D,et al.Impact of foot-and-mouth disease on fertility performance in a large dairy herd in Kenya[J].Prev Vet Med,2018,159:57-64.
[18]	BICALHO M L S,MARQUES E C,GILBERT R O,et al.The association of plasma glucose,BHBA,and NEFA with postpartum uterine diseases,fertility,and milk production of Holstein dairy cows[J].Theriogenology,2017,88:270-282.
[19]	O'HARA E A,BÅGE R,EMANUELSON U,et al.Effects of dry period length on metabolic status,fertility,udder health,and colostrum production in 2 cow breeds[J].J Dairy Sci,2019,102(1):595-606.
[20]	高腾云,张金钟,布登付,等.初配年龄对奶牛情期受胎率、犊牛初生重及头胎产奶量的影响[J].中国奶牛,1996(5):29-30.GAO T Y,ZHANG J Z,BU D F,et al.The effect of the age of first mating on the conception rate,the birth weight of calves and the milk yield of the first birth[J].China Dairy Cattle,1996(5):29-30.(in Chinese)
[21]	毛永江,杨章平,施学奎,等.中国荷斯坦牛初配年龄对繁殖性能的影响[J].中国畜牧杂志,2010,46(7):52-54.MAO Y J,YANG Z P,SHI X K,et al.Effect of the age of first mating on reproductive performance of Chinese Holstein[J]. Chinese Journal of Animal Science,2010,46(7):52-54.(in Chinese)
[22]	张彬,刘赫,释凯,等.荷斯坦奶牛首次产犊月龄对其头胎产奶量的影响调查[J].中国畜牧杂志,2018,54(1):131-133.ZHANG B,LIU H,SHI K,et al.An investigation on the effect of age at first calving of Holstein cows on the milk yield of their first fetus[J].Chinese Journal of Animal Science,2018,54(1):131-133.(in Chinese)
[23]	PIRLO G,MIGLIOR F,SPERONI M.Effect of age at first calving on production traits and on difference between milk yield returns and rearing costs in Italian Holsteins[J].J Dairy Sci,2000,83(3):603-608.
[24]	WATHES D C,BRICKELL J S,BOURNE N E,et al.Factors influencing heifer survival and fertility on commercial dairy farms[J].Animal,2008,2(8):1135-1143.
[25]	ADAMCZYK K,MAKULSKA J,JAGUSIAK W,et al.Associations between strain,herd size,age at first calving,culling reason and lifetime performance characteristics in Holstein-Friesian cows[J].Animal,2017,11(2):327-334.
[26]	TANAKA T,ARAI M,OHTANI S,et al.Influence of parity on follicular dynamics and resumption of ovarian cycle in postpartum dairy cows[J].Anim Reprod Sci,2008,108(1-2):134-143.
[27]	DÍAZ B R,GALINA C S,RUBIO I,et al.Monitoring changes in back fat thickness and its effect on the restoration of ovarian activity and fertility in Bos indicus cows[J].Reprod Domest Anim,2018,53(2):495-501.
[28]	SAKAGUCHI M,SASAMOTO Y,SUZUKI T,et al.Postpartum ovarian follicular dynamics and estrous activity in lactating dairy cows[J].J Dairy Sci,2004,87(7):2114-2121.
[29]	LUCY M C.Symposium review:selection for fertility in the modern dairy cow-current status and future direction for genetic selection[J].J Dairy Sci,2019,102(4):3706-3721.
[30]	KERSLAKE J I,AMER P R,O'NEILL P L,et al.Economic costs of recorded reasons for cow mortality and culling in a pasture-based dairy industry[J].J Dairy Sci,2018,101(2):1795-1803.
[31]	USDA APHIS VS.Part I:reference of 1996 dairy management practices[Z].United States:National Animal Health Monitoring System,1996.
[32]	USDA APHIS VS.Part I:reference of dairy cattle health and management practices in the united states[Z].United States:National Animal Health Monitoring System,2007.
[33]	郭刚,罗杨,刘善超,等.奶牛淘汰原因与淘汰时泌乳天数关系研究[J].中国奶牛,2012(17):47-49.GUO G,LUO Y,LIU S C,et al.Study on the relationship between the culling reasons of dairy cattle and the days of lactation[J]. China Dairy Cattle,2012(17):47-49.(in Chinese).
[34]	AHLMAN T,BERGLUND B,RYDHMER L,et al.Culling reasons in organic and conventional dairy herds and genotype by environment interaction for longevity[J].J Dairy Sci,2011,94(3):1568-1575.
[35]	CARVALHO M R,PEÑAGARICANO F,SANTOS J E P,et al.Long-term effects of postpartum clinical disease on milk production,reproduction,and culling of dairy cows[J].J Dairy Sci,2019,102(12):11701-11717.
[36]	KRPÁLKOVÁ L,CABRERA V E,KVAPILIK J,et al.Associations between age at first calving,rearing average daily weight gain,herd milk yield and dairy herd production,reproduction,and profitability[J].J Dairy Sci,2014,97(10):6573-6582.