@conference {3672,
	title = {Estimates of genetic parameters for direct and maternal genetic effects on weaning weights in Dairymeade sheep},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {77},
	year = {2017},
	month = {06/2017},
	pages = {129-132},
	address = {Rotorua},
	abstract = {Dairymeade is a newly registered breed of dairy sheep in the emerging New Zealand dairy sheep industry. The objective of this study was to estimate heritabilities and genetic correlations for direct and maternal genetic effects on weaning weight, as this trait reflects the genetic ability of the lamb to grow (direct genetic effect), and the genetic ability of the ewe to feed her lambs (maternal genetic effect) and protect them (maternal permanent environment).  Records of weaning weight were used from 717 lambs born between 2013 and 2016, with a pedigree of 5091 animals over 11 generations. Average and standard deviation of weaning weight, age at weaning and litter size were 18.1{\textpm}4.0 kg, 51.5{\textpm}13.0 days and 2.16{\textpm}0.7 lambs, respectively. At weaning, ewe lambs were 1.1 kg (SE=0.2 kg, P<0.05) lighter than ram lambs and singleton lambs were 4.1 kg (SE=2.9 kg, P<0.05) heavier than triplet lambs. Estimates of heritability ({\textpm}SE) were 0.55 ({\textpm}0.24), 0.24 ({\textpm}0.17) and 0.28 ({\textpm}0.13) for direct, maternal and total genetic effects, respectively. The proportion of total variance explained by maternal permanent environmental influences was 0.14 ({\textpm}0.07). The estimated genetic correlation between direct and maternal genetic effects was -0.72 ({\textpm}0.20). Maternal breeding values can be used to select ewe lambs specifically for milk production.},
	issn = {1176-5283},
	author = {Lopez-Villalobos N and King M and King J and Morris RS}
}
@conference {40103,
	title = {The effects of disease on productivity and profitability of livestock: How should it be assessed?},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {48},
	year = {1988},
	month = {Jan},
	pages = {117-126},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Selection for and against susceptibility to bloat in herds of Friesian-Jersey crossbred cattle at Ruakura has resulted in cattle of high (HS) and low (LS) susceptibility. Forty one HS and 41 LS animals including 44 cows and 38 bulls were slaughtered between 1985 and 1987 and weights of carcass components and some body organs measured. LS animals had a significantly higher proportion of bone weight and lower eye muscle area, proportions of hindquarter weight and saleable meat in the carcass than did HS animals. This was offset by a 14\% heavier hot carcass weight (HCW) in LS animals. Weights of heart and kidney, adjusted for HCW, were higher and those of mandibular glands were lower, for LS than HS animals. There were no differences between HS and LS herds in adjusted weights of liver, lungs and parotid glands.},
	issn = {1176-5283},
	author = {Morris RS}
}
