This may be due to improvement in DM, OM, and CP intakes and digestibility which can influence the live weight gain, and feed conversion efficiency
. In an experiment by Katongale et al  sheep fed banana leaf as a sole diet lost body weight compared with sweet potato vines indicating the necessity of feeding banana leaf with other feeds like desmodium for better performance.
Every week the feed amount was adjusted consistently with mass gain, feed conversion efficiency
(FCE), fish mass-specific growth rates (GR) and relative growth were calculated weekly as follows:
This results in higher feed conversion efficiency
, higher margins, improved animal health and reduced environmental emissions.
Since the effects of salinity on growth and feed conversion efficiency
and digestibility are poorly known in milkfish, therefore present investigations are an attempt to, i) study the effect of inland saline ground water salinity and two (low and high) different ration levels on growth performance of milkfish under field conditions and, ii) study the effect of five different salinity levels on growth performance, feed utilization and digestive enzyme activity in fish maintained under laboratory conditions.
Commenting on various trials he conducted, he said: "There's no doubt that supplementing dairy rations with essential oils, by using products such as CRINA[R] Ruminants, optimises feed conversion efficiency
-- more energy is diverted into milk production, rather than laying down body condition".
Adjusting this percentage to the moisture contents usually found in farm animal diets and body compositions results in a feed conversion efficiency
equal to 4 pounds (1.8 kilograms) of feed per pound (0.45 kilogram) of gain.
(Waltham, Mass.) grow four to six times faster than non-transgenic salmon and exhibit a greater than 20 percent improvement in feed conversion efficiency
. The company has 10,000 to 20,000 transgenic salmon in indoor tanks at three facilities in the Canadian Maritime provinces.
The feeding trials included the determination of daily body weight gain, daily dry matter intake, and feed conversion efficiency
. Pigs fed with rations containing up to 15% of coffee pulp ensiled with 5% molasses had equal or better total weight gain than those fed commercial concentrate.
Feed conversion efficiency
was greater (p<0.05) in sheep fed Walki straw than sheep fed Degaga and Shallo straws whereas statistically similar (p>0.05) with values obtained for sheep fed Mosisa and local straws.
increase/decrease in average wet weights, fork and total lengths, feed intake, feed conversion efficiency
and length-weight relationships of three fish species were monitored on weekly basis for 12 weeks.
Average body weight gain (BWG) and feed intake (FI) for each pen was recorded every 5 days and average feed conversion efficiency
(FCR) were adjusted for mortality and computed.