"Altering the influence of the testicles of male lambs is used to manipulate growth and body composition. To determine the effects on carcass weight and consequently returns to farmers, an analysis was undertaken from studies in the scientific literature in which animals were slaughtered at the same time," scientists in Hastings, New Zealand report.
"Each dataset was treated as if it were a random event and a model of sex type (including ram, cryptorchid, and wether) was fitted. Rams, cryptorchids and wethers slaughtered on the same date had similar carcass weights. Cryptorchid carcass weights ranged from 95-102%, and wethers 87-107%, of the weight of ram carcasses. Based on …
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