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首页> 外文期刊>Journal of Animal Science >Impact of piglet birth weight, birth order, and litter size on subsequent growth performance, carcass quality, muscle composition, and eating quality of pork.
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Impact of piglet birth weight, birth order, and litter size on subsequent growth performance, carcass quality, muscle composition, and eating quality of pork.

机译：仔猪出生体重，出生顺序和产仔数对随后的生长性能，car体品质，肌肉组成和猪肉食用品质的影响。

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The objective of this study was to investigate the relationships among birth weight, birth order, or litter size on growth performance, carcass quality, and eating quality of the ultimate pork product. Data were collected from 98 pig litters and, with the addition of recording birth weight and birth order, farrowing and piglet management were according to normal barn practices. In the nursery and during growout, the pigs received the normal feeding program for the barn and, with the addition of individual tattooing, were marketed as per standard procedure. From 24 litters, selected because they had at least 12 pigs born alive and represented a range of birth weights, 4 piglets were chosen (for a total of 96 piglets) and sent to Agriculture and Agri-Food Canada-Lacombe Research Centre (Lacombe, Alberta, Canada) when they reached 120 kg for extensive meat quality and sensory analysis. Individual BW was measured at birth, on the day of weaning, 5 wk after weaning, at nursery exit, at first pull, and at the time of marketing. Litter sizes were divided into 3 categories: small (3 to 10 piglets), medium (11 to 13 piglets), and large (14 to 19 piglets). There were 4 birth-weight quartiles: 0.80 to 1.20, 1.25 to 1.45, 1.50 to 1.70, and 1.75 to 2.50 kg. Increased litter size resulted in reduced mean birth weight (P < 0.05), but had no effect on within litter variability or carcass quality (P > 0.05) when slaughtered at the same endpoint. Lighter birth-weight pigs had reduced BW at weaning, 5 and 7 wk postweaning, and at first pull and had increased days to market (P < 0.05). Birth weight had limited effects on carcass quality, weight of primal cuts, objective quality, and overall palatability of the meat at the same slaughter weight (P > 0.05). In conclusion, increased litter size resulted in decreased mean birth weight but no change in days to market. Lighter birth-weight pigs took longer to reach market. Despite some differences in histological properties, birth weight had limited effects on carcass composition or final eating quality of the pork when slaughtered at the same BW and large litter size resulted in more pigs weaned and marketed compared with the smaller litters. We concluded that based on the conditions of this study, other than increased days to market, there is no reason based on pig performance or pork quality to slow down the goal of the pork industry to increase sow productivity as a means to increase efficiency. (c)American Society of Animal Science
机译：这项研究的目的是调查出生体重，出生顺序或垫料大小与最终猪肉产品的生长性能，car体质量和食用质量之间的关系。收集了98头猪的数据，并记录了出生体重和出生顺序，并按照正常的谷仓惯例进行了分娩和仔猪管理。在育苗室和成年猪期间，猪接受了谷仓的正常饲喂程序，并且除了个别纹身外，还按照标准程序销售。从24窝仔猪中挑选出来，因为它们至少有12头活着的猪，并且代表一定的出生体重，选择了4头仔猪（总共96头仔猪），并送到加拿大农业和农业食品-Lacombe研究中心（Lacombe，当它们达到120公斤时，可以进行广泛的肉质和感官分析。在出生时，断奶当天，断奶后5周，托儿所出口处，初次拔奶时和上市时测量个体体重。产仔数分为三类：小型（3至10头猪），中型（11至13头猪）和大型（14至19头猪）。出生体重四分位数有4个：0.80至1.20、1.25至1.45、1.50至1.70和1.75至2.50 kg。产仔数增加导致平均出生体重降低（P <0.05），但在同一终点处宰杀时，对产仔变异性或car体质量没有影响（P> 0.05）。体重较轻的仔猪在断奶时，断奶后5周和7周时以及在初次拔腹时降低了体重，并增加了上市天数（P <0.05）。在相同的屠宰体重下，出生体重对car体质量，初切肉重量，客观质量和肉的总体适口性的影响有限（P> 0.05）。总之，增加产仔数导致平均出生体重下降，但上市天数没有变化。体重较轻的猪需要更长的时间才能投放市场。尽管在组织学特性上存在一些差异，但在相同的体重下宰杀时，出生体重对猪肉的car体组成或最终食用质量的影响有限，与较小的垫料相比，较大的垫料导致更多的断奶和出售猪。我们得出的结论是，根据这项研究的条件，除了增加上市天数外，没有任何理由基于生猪的生长性能或猪肉品质而减慢猪肉行业提高母猪生产率作为提高效率的手段的目标。 （c）美国动物科学学会

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